21330907

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{727}}^1$

素因数の和:838

約数の個数: 16

約数和(自身を含む): 24012352

約数和(自身を除く): 2681445

約数列:

[1, 13, 37, 61, 481, 727, 793, 2257, 9451, 26899, 29341, 44347, 349687, 576511, 1640839, 21330907]

約数ペア:

[(1, 21330907), (13, 1640839), (37, 576511), (61, 349687), (481, 44347), (727, 29341), (793, 26899), (2257, 9451)]